Facts about Light,Sound,Energy and Electricity by Iyka

Light,sound and electricity are all forms of energy.Light and sound travel through substances as diffrent types of waves.Electricicty is a useful form of energy.It can easliy be converted to other forms of energy,such as heat or light. Circuts:An eletric current flows one place to another as a result of something called potential diffrence.This is simlar to the pressure diffrence that cause water to flow through pipes. Potential diffrence is measured in volt (v) and is called voltage.Current is mearsured in units called amperses (amps). Battery:A battery is a store of chemical energy that can be converted to electrical energy. The most common type of battery used at home is a dry cell. It contains a paste called an electrolylte which contains charged particals that an move.Chemical reactions make the charges seperet. Positive charges move to one terminal and negative ones move to the other. Fan Heater 10 amps: For an eletric current to keep flowing there must be a power source,such as a battery joined to an unbroken conducting pathway,such as a loop of a copper wope. Energy in action: If something happens, It happens because of energy. Everthing needed energy to happen. Very big happening: A space shuttle needs energy to get to earth. The energy is realsed by burning the fuel in the rocket launcher.Thunder ans lightning realeses eletrical energy in the sky which we can see and hear as light and sound. Plants and animals:Plants catch the sun energy using a green pigment called chlorophyll. The trap light energy to make glucose from carbon dioxide and water. This is called photosynthesis.